Yes, if you can spread the news on the net that the prices will drop and tell everybody to wait with shopping, and they do, the price will drop. in this case even the price of the newer models will drop. They have no other choice then.

Otherwise, it works for Sony specifically very well as their prices are specifically and unreasonably high, say all their products are badly overpriced, as they predictably reckon in future price drop. They start high, wait until the first layer of consumers all the brainwashed Sony fans do their shopping, when they are out Sony drops the prices for the second layer of their consumers and when they are out they drop again for they third layer, mostly through online discount stores. Alternatively they recycle the rest. That's Sony business philosophy and policy.

Consumer prices are never determined by makers they only dictate, prices are determined by consumers and by how they shape their shopping habits. That's what the internet and mobile phone and mass communication is for. In the industrial sector the flat cost, the production cost is normally a 10-15% of the consumer price (in the cosmetic sector it's 5%) they have a lot of reserves to afford price drop.